Karlosp.net» 3 letnik http://www.karlosp.net/blog Malo mešano na žaru Tue, 07 Feb 2012 10:18:39 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Java Proxy – Java Program to Access computers behind firewall http://www.karlosp.net/blog/2010/11/24/java-proxy-java-program-to-access-computers-behind-firewall-secured-pipe-between-two-computers-use-as-web-proxy-socks-proxy-or-file-server-hide-your-address-with-multiple-redirects-supports-any/ http://www.karlosp.net/blog/2010/11/24/java-proxy-java-program-to-access-computers-behind-firewall-secured-pipe-between-two-computers-use-as-web-proxy-socks-proxy-or-file-server-hide-your-address-with-multiple-redirects-supports-any/#comments Wed, 24 Nov 2010 08:59:28 +0000 karlosp http://www.karlosp.net/blog/?p=1110 Java Proxy

Java Proxy is not just usual proxy, it is advanced traffic redirection tool. It can provide you access to computers behind a firewall or NAT. You can implement these features transparently to your network and firewall, without modifying their configuration.

via Java Proxy – Java Program to Access computers behind firewall, secured pipe between two computers, use as web proxy, socks proxy or file server, hide your address with multiple redirects, supports any operating system, completely in Java, web proxy supports http, https, ftp. Java proxy – traffic redirection, redirect data over firewalls, proxies, sharing resources behind firewall or private network, built in web server, secured data bridges. Supports socks, web, ftp, http, https proxy for internet. Java programm, by java programmer and programer..

]]> http://www.karlosp.net/blog/2010/11/24/java-proxy-java-program-to-access-computers-behind-firewall-secured-pipe-between-two-computers-use-as-web-proxy-socks-proxy-or-file-server-hide-your-address-with-multiple-redirects-supports-any/feed/ 0 Java: save any component as JPEG http://www.karlosp.net/blog/2010/11/11/java-save-any-component-as-jpeg/ http://www.karlosp.net/blog/2010/11/11/java-save-any-component-as-jpeg/#comments Thu, 11 Nov 2010 21:27:58 +0000 karlosp http://www.karlosp.net/blog/?p=1098
PLAIN TEXT
JAVA:
  1. public static void saveComponentAsJPEG(Component myComponent, String filename) {<br />
  2.     &nbsp;&nbsp;&nbsp; Dimension size = myComponent.getSize();<br />
  3.     &nbsp;&nbsp;&nbsp; BufferedImage myImage = <br />
  4.     &nbsp;&nbsp;&nbsp; new BufferedImage(size.width, size.height,<br />
  5.     &nbsp;&nbsp;&nbsp; BufferedImage.TYPE_INT_RGB);<br />
  6.     &nbsp;&nbsp;&nbsp; Graphics2D g2 = myImage.createGraphics();<br />
  7.     &nbsp;&nbsp;&nbsp; myComponent.paint(g2);<br />
  8.     &nbsp;&nbsp;&nbsp; <br />
  9.     &nbsp;&nbsp;&nbsp; <br />
  10.     &nbsp;&nbsp;&nbsp; ImageSelection imgSel = new ImageSelection(myImage); <br />
  11.     &nbsp;&nbsp;&nbsp; Toolkit.getDefaultToolkit().getSystemClipboard().setContents(imgSel, null); <br />
  12.     &nbsp;&nbsp;&nbsp; <br />
  13.     &nbsp;&nbsp;&nbsp; try {<br />
  14.     &nbsp;&nbsp;&nbsp; OutputStream out = new FileOutputStream(filename);<br />
  15.     &nbsp;&nbsp;&nbsp; JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);<br />
  16.     &nbsp;&nbsp;&nbsp; encoder.encode(myImage);<br />
  17.     &nbsp;&nbsp;&nbsp; out.close();<br />
  18.     &nbsp;&nbsp;&nbsp; } catch (Exception e) {<br />
  19.     &nbsp;&nbsp;&nbsp; System.out.println(e); <br />
  20.     &nbsp;&nbsp;&nbsp; }<br />
  21.     } }

]]> http://www.karlosp.net/blog/2010/11/11/java-save-any-component-as-jpeg/feed/ 0 Linux, bash find in files http://www.karlosp.net/blog/2010/09/30/linux-bash-find-in-files/ http://www.karlosp.net/blog/2010/09/30/linux-bash-find-in-files/#comments Thu, 30 Sep 2010 09:38:28 +0000 karlosp http://www.karlosp.net/blog/?p=1068 find . -type f -exec grep -i "redeem reward" {} \; -print 2>/dev/null

]]> http://www.karlosp.net/blog/2010/09/30/linux-bash-find-in-files/feed/ 0 Bash: count all lines in a directory http://www.karlosp.net/blog/2009/11/15/bash-count-all-lines-in-a-directory/ http://www.karlosp.net/blog/2009/11/15/bash-count-all-lines-in-a-directory/#comments Sun, 15 Nov 2009 08:05:24 +0000 karlosp http://www.karlosp.net/blog/?p=913 PLAIN TEXT
CODE:
  1. find . -type f | xargs wc -l | grep 'total' | awk '{print $1}'

]]> http://www.karlosp.net/blog/2009/11/15/bash-count-all-lines-in-a-directory/feed/ 0 Using JSSE for secure socket communication http://www.karlosp.net/blog/2009/07/28/using-jsse-for-secure-socket-communication/ http://www.karlosp.net/blog/2009/07/28/using-jsse-for-secure-socket-communication/#comments Tue, 28 Jul 2009 06:39:00 +0000 karlosp http://www.karlosp.net/blog/?p=657 Using JSSE for secure socket communication

]]> http://www.karlosp.net/blog/2009/07/28/using-jsse-for-secure-socket-communication/feed/ 0 Java Threads http://www.karlosp.net/blog/2009/05/17/java-threads/ http://www.karlosp.net/blog/2009/05/17/java-threads/#comments Sun, 17 May 2009 11:47:19 +0000 karlosp http://www.karlosp.net/blog/?p=613 http://www.exampledepot.com/egs/java.lang/BasicThread.html

]]> http://www.karlosp.net/blog/2009/05/17/java-threads/feed/ 0 Java JTable mastering http://www.karlosp.net/blog/2009/04/28/java-jtable-mastering/ http://www.karlosp.net/blog/2009/04/28/java-jtable-mastering/#comments Tue, 28 Apr 2009 20:59:41 +0000 karlosp http://www.karlosp.net/blog/?p=601 PLAIN TEXT
JAVA:
  1. //My custom cell editor
  2. import java.awt.Color;
  3. import java.awt.Component;
  4.  
  5. import javax.swing.BorderFactory;
  6. import javax.swing.DefaultCellEditor;
  7. import javax.swing.JComboBox;
  8. import javax.swing.JTable;
  9. import javax.swing.JTextField;
  10.  
  11. public class MyCellEditor extends DefaultCellEditor{
  12. private static final long serialVersionUID = 1L;
  13.  
  15.  
  16. public MyCellEditor() {
  17. super(new javax.swing.JTextField());
  18. }
  19.  
  20. public Component getTableCellEditorComponent(JTable table, Object value,
  21. boolean isSelected, int row, int column){
  22.  
  23. Component c = super.getTableCellEditorComponent(table, value, isSelected, row, column);
  24.  
  25. if(c instanceof JTextField){
  26. jtf = (JTextField)c;
  27. jtf.selectAll();
  28. jtf.setBorder(BorderFactory.createLineBorder(Color.GREEN, 1));
  29. }
  30.  
  31. return c;
  32. }
  33. }

PLAIN TEXT
JAVA:
  1. /*
  2. * TableTest.java
  3. *
  4. * Created on 08 July 2004, 11:07
  5. */
  6.  
  7. /**
  8. *
  9. * @author  admin
  10. */
  11. import javax.swing.JTable;
  12.  
  13. class MyEditor extends javax.swing.DefaultCellEditor{
  14.  
  15. javax.swing.JTextField jtf;
  16.  
  17. public MyEditor(){
  18. super(new javax.swing.JTextField());
  19.  
  20. }
  21.  
  22. public java.awt.Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column){
  23. java.awt.Component c = super.getTableCellEditorComponent( table, value, isSelected, row, column);
  24. if(c instanceof javax.swing.JTextField){
  25. jtf = ((javax.swing.JTextField)c);
  26. jtf.selectAll();
  27. //jtf.setText("");
  28. //jtf.setCaretPosition(0);
  29. jtf.setBorder(javax.swing.BorderFactory.createLineBorder(java.awt.Color.BLACK, 1));
  30. }
  31.  
  32. return c;
  33. }
  34.  
  35. }
  36. public class TableTest extends javax.swing.JFrame {
  37.  
  38. /** Creates new form TableTest */
  39. public TableTest() {
  40. initComponents();
  41. ((javax.swing.DefaultCellEditor)jTable1.getDefaultEditor(new Object().getClass())).setClickCountToStart(1);
  42.  
  43. //jTable1.setDefaultEditor(new Object().getClass(), new MyEditor());
  44. jTable2.setDefaultEditor(new Object().getClass(), new MyEditor());
  45.  
  46. }
  47.  
  48. /** This method is called from within the constructor to
  49. * initialize the form.
  50. * WARNING: Do NOT modify this code. The content of this method is
  51. * always regenerated by the Form Editor.
  52. */
  53. private void initComponents() {
  54. jTable1 = new javax.swing.JTable();
  55. jTable2 = new javax.swing.JTable();
  56. jLabel1 = new javax.swing.JLabel();
  57.  
  58. addWindowListener(new java.awt.event.WindowAdapter() {
  59. public void windowClosing(java.awt.event.WindowEvent evt) {
  60. exitForm(evt);
  61. }
  62. });
  63.  
  64. jTable1.setModel(new javax.swing.table.DefaultTableModel(
  65. new Object [][] {
  66. {"jtable1", "jtable1", "jtable1", "jtable1"},
  67. {"jtable1", "jtable1", "jtable1", "jtable1"},
  68. {"jtable1", "jtable1", "jtable1", "jtable1"},
  69. {"jtable1", "jtable1", "jtable1", "jtable1"}
  70. },
  71. new String [] {
  72. "Title 1", "Title 2", "Title 3", "Title 4"
  73. }
  74. ));
  75. getContentPane().add(jTable1, java.awt.BorderLayout.NORTH);
  76.  
  77. jTable2.setModel(new javax.swing.table.DefaultTableModel(
  78. new Object [][] {
  79. {"jtable2", "jtable2", "jtable2", "jtable2"},
  80. {"jtable2", "jtable2", "jtable2", "jtable2"},
  81. {"jtable2", "jtable2", "jtable2", "jtable2"},
  82. {"jtable2", "jtable2", "jtable2", "jtable2"}
  83. },
  84. new String [] {
  85. "Title 1", "Title 2", "Title 3", "Title 4"
  86. }
  87. ));
  88. getContentPane().add(jTable2, java.awt.BorderLayout.SOUTH);
  89.  
  90. jLabel1.setText("JTable clear selection on focus loss example by cjard@hotmail.com");
  91. getContentPane().add(jLabel1, java.awt.BorderLayout.CENTER);
  92.  
  93. pack();
  94. }
  95.  
  96. /** Exit the Application */
  97. private void exitForm(java.awt.event.WindowEvent evt) {
  98. System.exit(0);
  99. }
  100.  
  101. /**
  102. * @param args the command line arguments
  103. */
  104. public static void main(String args[]) {
  105. new TableTest().show();
  106. }
  107.  
  108. // Variables declaration - do not modify
  109. private javax.swing.JLabel jLabel1;
  110. private javax.swing.JTable jTable1;
  111. private javax.swing.JTable jTable2;
  112. // End of variables declaration
  113.  
  114. }

]]> http://www.karlosp.net/blog/2009/04/28/java-jtable-mastering/feed/ 0 Java custom logger http://www.karlosp.net/blog/2009/04/21/java-custom-logger/ http://www.karlosp.net/blog/2009/04/21/java-custom-logger/#comments Tue, 21 Apr 2009 09:03:42 +0000 karlosp http://www.karlosp.net/blog/?p=598 PLAIN TEXT
JAVA:
  1. import java.util.logging.*;
  2.  
  3. public class MyLogger {
  4.  
  5. //1. CREATE logger
  6. //private static final Logger dnevnik = Logger.getLogger("bla");
  7.  
  8. //2. Init MyLogger
  9. //MyLogger.init();
  10.  
  11. //3. [Switch Off]
  12. //dnevnik.setLevel(Level.OFF);
  13.  
  14. //4. Usage
  15. //dnevnik.info("Vstop v metodo bla bla čšž fasf\n");
  16.  
  17. public static void init()
  18. {
  19. if(System.getProperty("java.util.logging.config.class") == null &amp;&amp;
  20. System.getProperty("java.util.logging.config.class") == null){
  21.  
  22. try {
  23. String currentDir = System.getProperty("user.dir");
  24. System.out.println("Logger Working Directory: " + currentDir);
  25.  
  26. Logger lg = Logger.getLogger("");
  27.  
  28. lg.setLevel(Level.ALL);
  29. FileHandler fh = new FileHandler(currentDir+"\\program%g.log", 0, 10);
  30. fh.setEncoding("UTF-8");
  31.  
  32. lg.addHandler(fh);
  33. } catch (Exception e) {
  34. System.out.printf("Nisem uspel vspostaviti dnevnika!\ne = %s",e);
  35. }
  36. }
  37. }
  38.  
  39. public static void main(String[] args) {
  40. init();
  41. }
  42. }

]]> http://www.karlosp.net/blog/2009/04/21/java-custom-logger/feed/ 1 Java MySql connection (povezava) http://www.karlosp.net/blog/2008/06/23/java-mysql-connection-povezava/ http://www.karlosp.net/blog/2008/06/23/java-mysql-connection-povezava/#comments Mon, 23 Jun 2008 15:33:52 +0000 karlosp http://www.karlosp.net/blog/?p=257 Copy mysql-connector-java-3114-bin to C:\Program Files\Java\jre1.6.X\lib\ext

PLAIN TEXT
JAVA:
  1. import java.sql.Connection;
  2. import java.sql.DriverManager;
  3. import java.sql.SQLException;
  4.  
  5. // Notice, do not import com.mysql.jdbc.*
  6. // or you will have problems!
  7.  
  8. public class LoadDriver {
  9.  
  10.     Connection conn = null;
  11.    
  12.     public static void main(String[] args) {
  13.         try {
  14.         // The newInstance() call is a work around for some
  15.         // broken Java implementations
  16.  
  17.         Class.forName("com.mysql.jdbc.Driver").newInstance();
  18.         conn =
  19.         DriverManager.getConnection("jdbc:mysql://localhost/test?" +
  20.                                    "user=monty&password=greatsqldb");
  21.                                   
  22.         Statement stmt = null;
  23.         ResultSet rs = null;
  24.  
  25.         stmt = conn.createStatement();
  26.         rs = stmt.executeQuery("SELECT foo FROM bar");
  27.  
  28.         // or alternatively, if you don't know ahead of time that
  29.         // the query will be a SELECT...
  30.  
  31.         if (stmt.execute("SELECT foo FROM bar")) {
  32.             rs = stmt.getResultSet();
  33.         }
  34.  
  35.         } catch (Exception ex) {
  36.             // handle any errors
  37.             System.out.println("SQLException: " + ex.getMessage());
  38.             System.out.println("SQLState: " + ex.getSQLState());
  39.             System.out.println("VendorError: " + ex.getErrorCode());
  40.  
  41.         }
  42.         finally {
  43.         // it is a good idea to release
  44.         // resources in a finally{} block
  45.         // in reverse-order of their creation
  46.         // if they are no-longer needed
  47.  
  48.         if (rs != null) {
  49.             try {
  50.                 rs.close();
  51.             } catch (SQLException sqlEx) { } // ignore
  52.  
  53.             rs = null;
  54.         }
  55.  
  56.         if (stmt != null) {
  57.             try {
  58.                 stmt.close();
  59.             } catch (SQLException sqlEx) { } // ignore
  60.  
  61.             stmt = null;
  62.         }
  63.     }   
  64. }

PLAIN TEXT
JAVA:
  1. import java.sql.*;
  2.  
  3. public class Jdbc10 {
  4.   public static void main(String args[]){
  5.     System.out.println(
  6.                   "Copyright 2004, R.G.Baldwin");
  7.     try {
  8.       Statement stmt;
  9.       ResultSet rs;
  10.  
  11.       //Register the JDBC driver for MySQL.
  12.       Class.forName("com.mysql.jdbc.Driver");
  13.  
  14.       //Define URL of database server for
  15.       // database named JunkDB on the localhost
  16.       // with the default port number 3306.
  17.       String url =
  18.             "jdbc:mysql://localhost:3306/JunkDB";
  19.  
  20.       //Get a connection to the database for a
  21.       // user named auser with the password
  22.       // drowssap, which is password spelled
  23.       // backwards.
  24.       Connection con =
  25.                      DriverManager.getConnection(
  26.                         url,"auser", "drowssap");
  27.  
  28.       //Display URL and connection information
  29.       System.out.println("URL: " + url);
  30.       System.out.println("Connection: " + con);
  31.  
  32.       //Get a Statement object
  33.       stmt = con.createStatement();
  34.  
  35.       //As a precaution, delete myTable if it
  36.       // already exists as residue from a
  37.       // previous run.  Otherwise, if the table
  38.       // already exists and an attempt is made
  39.       // to create it, an exception will be
  40.       // thrown.
  41.       try{
  42.         stmt.executeUpdate("DROP TABLE myTable");
  43.       }catch(Exception e){
  44.         System.out.print(e);
  45.         System.out.println(
  46.                   "No existing table to delete");
  47.       }//end catch
  48.  
  49.       //Create a table in the database named
  50.       // myTable.
  51.       stmt.executeUpdate(
  52.             "CREATE TABLE myTable(test_id int," +
  53.                   "test_val char(15) not null)");
  54.  
  55.       //Insert some values into the table
  56.       stmt.executeUpdate(
  57.                 "INSERT INTO myTable(test_id, " +
  58.                     "test_val) VALUES(1,'One')");
  59.  
  60.       //Get another statement object initialized
  61.       // as shown.
  62.       stmt = con.createStatement(
  63.                ResultSet.TYPE_SCROLL_INSENSITIVE,
  64.                      ResultSet.CONCUR_READ_ONLY);
  65.  
  66.       //Query the database, storing the result
  67.       // in an object of type ResultSet
  68.       rs = stmt.executeQuery("SELECT * " +
  69.                 "from myTable ORDER BY test_id");
  70.  
  71.       //Use the methods of class ResultSet in a
  72.       // loop to display all of the data in the
  73.       // database.
  74.       System.out.println("Display all results:");
  75.       while(rs.next()){
  76.         int theInt= rs.getInt("test_id");
  77.         String str = rs.getString("test_val");
  78.         System.out.println("\ttest_id= " + theInt
  79.                              + "\tstr = " + str);
  80.       }//end while loop
  81.  
  82.       //Display the data in a specific row using
  83.       // the rs.absolute method.
  84.       System.out.println(
  85.                         "Display row number 2:");
  86.       if( rs.absolute(2) ){
  87.         int theInt= rs.getInt("test_id");
  88.         String str = rs.getString("test_val");
  89.         System.out.println("\ttest_id= " + theInt
  90.                              + "\tstr = " + str);
  91.       }//end if
  92.  
  93.       //Delete the table and close the connection
  94.       // to the database
  95.       stmt.executeUpdate("DROP TABLE myTable");
  96.       con.close();
  97.     }catch( Exception e ) {
  98.       e.printStackTrace();
  99.     }//end catch
  100.   }//end main
  101. }//end class Jdbc10

]]> http://www.karlosp.net/blog/2008/06/23/java-mysql-connection-povezava/feed/ 0 Fibonacci number: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89 http://www.karlosp.net/blog/2008/01/21/fibonacci-number-0-1-1-2-3-5-8-13-21-34-55-89/ http://www.karlosp.net/blog/2008/01/21/fibonacci-number-0-1-1-2-3-5-8-13-21-34-55-89/#comments Mon, 21 Jan 2008 20:13:19 +0000 karlosp http://www.karlosp.net/blog/2008/01/21/fibonacci-number-0-1-1-2-3-5-8-13-21-34-55-89/ PLAIN TEXT
CODE:
  1. #!/bin/bash
  2. if [ $# -ne 1 ]
  3. then
  4.     echo 'Uporaba: sh fibo n'
  5.     exit
  6. fi
  7.  
  8. y0=0
  9. y1=1
  10. stevec=2
  11. if [ $# -eq 1 -a $1 -gt 2 ]
  12. then
  13. echo $y0
  14. echo $y1
  15.     while [ $stevec -le $1 ]
  16.     do
  17.         let "y3=$y0+$y1"
  18.         echo $y3
  19.  
  20.         y0=$y1
  21.         y1=$y3
  22.         let "stevec=$stevec+1"
  23.     done
  24. fi

]]> http://www.karlosp.net/blog/2008/01/21/fibonacci-number-0-1-1-2-3-5-8-13-21-34-55-89/feed/ 0